BAT54, A, C, S
June 1999 - Ed: 3A
SMALL SIGNAL SCHOTTKY DIODE
VERY SMALL CONDUCTION LOSSES
NEGLIGIBLE SWITCHING LOSSES
LOW FORWARD VOLTAGE DROP
SURFACE MOUNT DEVICE
FEATURES AND BENEFITS
Schottky barrier diodes encapsulated in a SOT-23
small SMD packages.
Double diodes with different pining are available.
DESCRIPTION
SOT-23
K
K
A
A
Nc
Symbol
Parameter
Value
Unit
V
RRM
Repetitive peak reverse voltage
30
V
I
F
Continuous forward current
0.3
A
I
FSM
Surge non repetitive forward current
tp=10ms sinusoidal
1
A
P
tot
Power dissipation (note 1)
T
amb
= 25C
250
mW
T
stg
Maximum storage temperature range
- 65 to +150
C
Tj
Maximum operating junction temperature *
150
C
T
L
Maximum temperature for soldering during 10s
260
C
Note 1: for double diodes, Ptot is the total dissipation of both diodes.
ABSOLUTE RATINGS (limiting values)
BAT54
A2
A2
A1
A1
K
K
BAT54C
A2
A2
A1
K2
A1
K2
K1
K1
BAT54S
* :
dPtot
dTj
<
1
Rth
(
j
-
a
)
thermal runaway condition for a diode on its own heatsink
K2
K2
K1
K1
A
A
BAT54A
1/5
Symbol
Parameters
Tests conditions
Min.
Typ.
Max.
Unit
V
F
*
Forward voltage drop
Tj = 25
C
I
F
= 0.1 mA
240
mV
I
F
= 1 mA
320
I
F
= 10 mA
400
I
F
= 30 mA
500
I
F
= 100 mA
900
I
R
**
Reverse leakage current
Tj = 25
C
V
R
= 30 V
1
A
Tj = 100
C
100
Pulse test :
* tp = 380
s,
< 2%
** tp = 5 ms,
< 2%
STATIC ELECTRICAL CHARACTERISTICS (per diode)
Symbol
Parameters
Tests conditions
Min.
Typ.
Max.
Unit
C
Junction
capacitance
Tj = 25
C
V
R
= 1 V
F = 1 MHz
10
pF
t
rr
Reverse recovery
time
I
F
= 10 mA I
R
= 10 mA Tj = 25C
I
rr
= 1 mA R
L
= 100
5
ns
DYNAMIC CHARACTERISTICS (Tj = 25 C)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
PF(av)(W)
= 0.2
= 0.5
= 1
= 0.05
= 0.1
IF(av) (A)
T
=tp/T
tp
Fig.1 : Average forward power dissipation versus
average forward current.
0
25
50
75
100
125
150
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
IF(av)(A)
T
=tp/T
tp
Tamb(C)
Fig.2 : Average forward current versus ambient
temperature (
= 1).
Symbol
Parameter
Value
Unit
R
th (j-a)
Junction to ambient (*)
500
C/W
(*) Mounted on epoxy board with recommended pad layout.
THERMAL RESISTANCE
BAT54, A, C, S
2/5
1E-3
1E-2
1E-1
1E+0
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
IM(A)
Ta=25C
Ta=50C
Ta=100C
I
M
t
=0.5
t(s)
Fig.3 : Non repetitive surge peak forward current
versus overload duration (maximum values).
0
5
10
15
20
25
30
1E-2
1E-1
1E+0
1E+1
1E+2
VR(V)
IR(A)
Tj=50C
Tj=25C
Tj=100C
Fig.5 : Reverse leakage current versus reverse
voltage applied (typical values).
1E-3
1E-2
1E-1
1E+0
1E+1
1E+2
0.01
0.10
1.00
tp(s)
Zth(j-a)/Rth(j-a)
T
=tp/T
tp
Single pulse
= 0.1
= 0.2
= 0.5
Fig.4 : Relative variation of thermal impedance
junction to ambient versus pulse duration (alumine
substrate 10mm x 8mm x 0.5mm).
0
25
50
75
100
125
150
1E-2
1E-1
1E+0
1E+1
1E+2
1E+3
1E+4
IR(A)
VR=30V
Tj(C)
Fig.6 : Reverse leakage current versus junction
temperature.
1
2
5
10
20
30
1
2
5
10
VR(V)
C(pF)
F=1MHz
Tj=25C
Fig.7 : Junction capacitance versus reverse
voltage applied (typical values).
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1E-4
1E-3
1E-2
1E-1
5E-1
VFM(V)
IFM(A)
Tj=100C
Tj=50C
Tj=25C
Fig.8 : Forward voltage drop versus forward
current (typical values).
BAT54, A, C, S
3/5
PACKAGE MECHANICAL DATA
SOT-23
B
E
S
e
e1
A
D
c
L
H
A1
REF.
DIMENSIONS
Millimeters
Inches
Min.
Max.
Min.
Max.
A
0.89
1.4
0.035
0.055
A1
0
0.1
0
0.004
B
0.3
0.51
0.012
0.02
c
0.085
0.18
0.003
0.007
D
2.75
3.04
0.108
0.12
e
0.85
1.05
0.033
0.041
e1
1.7
2.1
0.067
0.083
E
1.2
1.6
0.047
0.063
H
2.1
2.75
0.083
0.108
L
0.6 typ.
0.024 typ.
S
0.35
0.65
0.014
0.026
Ordering type
Marking
Package
Weight
Base qty
Delivery mode
BAT54FILM
D86
SOT-23
0.01g
3000
Tape & reel
BAT54AFILM
D84
SOT-23
0.01g
3000
Tape & reel
BAT54CFILM
D87
SOT-23
0.01g
3000
Tape & reel
BAT54SFILM
D88
SOT-23
0.01g
3000
Tape & reel
Epoxy meets UL94,V0
BAT54, A, C, S
4/5
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0.9
0.035
0.9
0.035
1.9
0.075
mm
inch
2.35
0.92
1.1
0.043
1.1
0.043
1.45
0.037
0.9
0.035
FOOTPRINT DIMENSIONS
COMPATIBLE SOT-23 / SC-59
(in millimeters and inches)
0.9
0.035
0.9
0.035
2
0.079
mm
inch
2.35
0.92
1
0.040
1
0.040
1
0.040
0.9
0.035
OPTIMIZED SOT-23 FOOTPRINT DIMENSIONS
(in millimeters and inches)
BAT54, A, C, S
5/5
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